bsc: fix ho-out test failures: cleanup neighbor cfg cruft

In the out-of-this-BSC handover tests, a neighbor config of LAC 99 left
behind from a previous test obstructed the test from working:

 % BTS 0 already had neighbor LAC:99 ARFCN-BSIC:123-45
 % ERROR: duplicate Cell ID in neighbor config, with differing ARFCN+BSIC: LAC:99 ARFCN-BSIC:123-any

Add a 'no neighbor lac 99' before configuring the neighbor via VTY.

Also add the missing neighbor config to
f_tc_srvcc_eutran_to_geran_ho_out_main().

Affects tests:
BSC_Tests.TC_ho_out_of_this_bsc
BSC_Tests.TC_srvcc_eutran_to_geran_ho_out
BSC_Tests.TC_srvcc_eutran_to_geran_ho_out_forbid_fast_return

Change-Id: I7a7c97a47a06abb59c0d89638c6b503ab66eb359
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 5276ed9..c485ec5 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -5616,6 +5616,7 @@
 		     "handover 1",
 		     "handover algorithm 2",
 		     "handover2 window rxlev averaging 1",
+		     "no neighbors",
 		     "neighbor lac 99 arfcn 123 bsic any"});
 	f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
 
@@ -5687,7 +5688,7 @@
 	var template PDU_BSSAP exp_compl := f_gen_exp_compl();
 	f_establish_fully(ass_req, exp_compl);
 
-	f_bts_0_cfg(BSCVTY, {"neighbor lac 99 arfcn 123 bsic any"});
+	f_bts_0_cfg(BSCVTY, {"no neighbor lac 99", "neighbor lac 99 arfcn 123 bsic any"});
 	f_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
 
 	BSSAP.receive(tr_BSSMAP_HandoverRequired);
@@ -5731,7 +5732,7 @@
 	var template PDU_BSSAP exp_compl := f_gen_exp_compl();
 	f_establish_fully(ass_req, exp_compl);
 
-	f_bts_0_cfg(BSCVTY, {"neighbor lac 99 arfcn 123 bsic any"});
+	f_bts_0_cfg(BSCVTY, {"no neighbor lac 99", "neighbor lac 99 arfcn 123 bsic any"});
 	f_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
 
 	BSSAP.receive(tr_BSSMAP_HandoverRequired);
@@ -5813,7 +5814,7 @@
 	var template PDU_BSSAP exp_compl := f_gen_exp_compl();
 	f_establish_fully(ass_req, exp_compl);
 
-	f_bts_0_cfg(BSCVTY, {"neighbor lac 99 arfcn 123 bsic any"});
+	f_bts_0_cfg(BSCVTY, {"no neighbor lac 99", "neighbor lac 99 arfcn 123 bsic any"});
 	f_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
 
 	BSSAP.receive(tr_BSSMAP_HandoverRequired);
@@ -6099,6 +6100,16 @@
 	var MSC_ConnHdlr vc_conn;
 	var TestHdlrParams pars := f_gen_test_hdlr_pars();
 
+	f_init_vty();
+	f_bts_0_cfg(BSCVTY,
+		    {"neighbor-list mode automatic",
+		     "handover 1",
+		     "handover algorithm 2",
+		     "handover2 window rxlev averaging 1",
+		     "no neighbors",
+		     "neighbor lac 99 arfcn 123 bsic any"});
+	f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
+
 	f_init(1, true);
 	if (disable_fast_return) {
 		f_vty_allow_srvcc_fast_return(true, 0);